योगवासिष्ठः yogavāsiṣṭhaḥ - book-3, chapter-24, verse-8

धारागृहधिया धीरगङ्गानिर्झरधारिणि ।
भ्रेमतुर्वातविक्षुब्धमेघमण्डलमण्डपे ॥ ८ ॥

dhārāgṛhadhiyā dhīragaṅgānirjharadhāriṇi ,
bhrematurvātavikṣubdhameghamaṇḍalamaṇḍape 8

8. dhārāgṛhadhiyā dhīragaṅgānirjharadhāriṇi
bhrematuḥ vātavikṣubdhameghamaṇḍalamaṇḍape

8. dhārāgṛhadhiyā bhrematuḥ vātavikṣubdhameghamaṇḍalamaṇḍape
dhīragaṅgānirjharadhāriṇi

8. They wandered, mistaking a pavilion (or expanse) of cloud masses, agitated by the wind and containing steady streams like those of the Ganga, for a shower house.

Words meanings summery:

• धारागृहधिया (dhārāgṛhadhiyā) - with the thought of a shower house; mistaking for a shower house

• धीरगङ्गानिर्झरधारिणि (dhīragaṅgānirjharadhāriṇi) - describing the cloud pavilion as holding steady streams reminiscent of the Ganga (in that which holds steady Ganga-like waterfalls/streams)

• भ्रेमतुः (bhrematuḥ) - they roamed, they wandered

• वातविक्षुब्धमेघमण्डलमण्डपे (vātavikṣubdhameghamaṇḍalamaṇḍape) - in a pavilion of cloud masses agitated by the wind

Words meanings and morphology

धारागृहधिया (dhārāgṛhadhiyā) - with the thought of a shower house; mistaking for a shower house

(noun)

Instrumental, feminine, singular of dhārāgṛhadhī

dhārāgṛhadhī - idea of a shower house

Compound type : tatpuruṣa (dhārāgṛha+dhī)

• dhārāgṛha – shower house, bath house with running water
  noun (neuter)
• dhī – thought, intellect, idea, understanding
  noun (feminine)

धीरगङ्गानिर्झरधारिणि (dhīragaṅgānirjharadhāriṇi) - describing the cloud pavilion as holding steady streams reminiscent of the Ganga (in that which holds steady Ganga-like waterfalls/streams)

(adjective)

Locative, masculine, singular of dhīragaṅgānirjharadhārin

dhīragaṅgānirjharadhārin - holding steady Ganga-like waterfalls

Derived from root dhṛ (to hold) + ṇini suffix (agentive)

Compound type : tatpuruṣa (dhīra+gaṅgā+nirjhara+dhārin)

• dhīra – steady, firm, calm, grave
  adjective (masculine)
• gaṅgā – the river Ganga
  proper noun (feminine)
• nirjhara – waterfall, cascade, stream
  noun (masculine)
• dhārin – holding, bearing, possessing, containing
  adjective (masculine)
  agent noun/adjective
  Derived from root dhṛ (to hold) with -in suffix
  Root: dhṛ (class 1)

Note: Agrees with 'maṇḍape'

भ्रेमतुः (bhrematuḥ) - they roamed, they wandered

(verb)

3rd person , dual, active, perfect (lit) of bhram

perfect tense

reduplicated perfect, ātmanepada form used as parasmaipada

Root: bhram (class 1)

वातविक्षुब्धमेघमण्डलमण्डपे (vātavikṣubdhameghamaṇḍalamaṇḍape) - in a pavilion of cloud masses agitated by the wind

(noun)

Locative, masculine, singular of vātavikṣubdhameghamaṇḍalamaṇḍapa

vātavikṣubdhameghamaṇḍalamaṇḍapa - pavilion of cloud masses agitated by the wind

Compound type : tatpuruṣa (vāta+vikṣubdha+meghamaṇḍala+maṇḍapa)

• vāta – wind, air
  noun (masculine)
• vikṣubdha – agitated, disturbed, shaken
  adjective (masculine)
  Past Passive Participle
  Past Passive Participle of root kṣubh with prefix vi-
  Prefix: vi
  Root: kṣubh (class 4)
• meghamaṇḍala – mass of clouds, cloud formation
  noun (neuter)
• maṇḍapa – pavilion, open hall, canopy
  noun (masculine)